Peavey SRC 4034 FC, SRC 4026 FC, SRC Series, SRC 4018 FC owner manual Master Functions, Aux Pfl

21. Pad

Attenuates the input signal by 10 dB. This will increase the dynamic range to accommodate a higher input level before clipping which may be necessary when close miking loud guitar amplifiers or drum kits.

22. Polarity

Reverses the polarity of the input signal. This will compensate for an out-of-phase input that would otherwise cause frequency cancellations in the mix. (Often needed for drum mics where both sides of the drum head are picked up in multiple microphone

situations.)

23.	Phantom power	23
	Applies 48V DC voltage to all input XLR con-
21	nectors to power microphones that require it.
	If phantom power is used, do not connect
	unbalanced dynamic microphones or other	24
22	devices to the XLR inputs that cannot handle
	this voltage. (Some wireless receivers may
	be damaged, consult their manuals.) The
	Line Input jacks (#1) are not connected to the
	48V supply, and are safe for all inputs (balanced
	or unbalanced). An unbalanced-to-balanced
	impedance converter such as the Peavey	5116
	or 7201 (female XLR), or a Peavey 1:1 interface
adapter can also be used to isolate the mic input from 48V. Phantom
			25
power is not available at the talk back mic connector.

24. Stereo Input

High-impedance input for line-level signals. The left/mono input supplies signal to both the left and right inputs if there is nothing inserted to the right input jack.

	25.	Trim
26	27	Varies the gain of the stereo input to optimize the signal-to-noise ratio.
		The adjustment range is unity to +20 dB. Proper adjustment will
	28	maximize the signal-to-noise ratio, and can be set using the PFL
		switch. (See #4)
	Master Functions
	26.	AUX Master Level
		Sets the overall level of the AUX signal that is sent to the output jack. (See #49)
	27.	AUX PFL/Clip
		A dual function LED that illuminates when the signal level is nearing the over-
		load point, or if the PFL switch is engaged. It illuminates at +19 dBu. (There
		is roughly 2 dB of headroom remaining when it lights.) When the AUX PFL
		switch (#28) is depressed, it lights continuously to indicate that this AUX has
		been assigned to the PFL mix.
	28.	AUX PFL
		Connects the AUX signal (pre-master level) to the PFL mix and switches the
		headphone/control room source from the L-R mix to the PFL mix. It also
		connects the PFL signal to the L-R meters to aid in monitoring the output level.

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